(iii) Payment by Lessor. Provided that no Event of Default has occurred and is continuing, any claims by Lessee for reimbursement from Maintenance Reserves shall be made not later than ninety (90) days after completion of the related work for which reimbursement is sought or upon Lessee's receipt of invoices from any external maintenance provider, whichever is later, but in no event later than six (6) months after completion of the related work and provided that Lessee has notified Lessor in writing that such invoices are in process. 



 Provided no Event of Default shall have occurred and be continuing, Lessor shall pay to Lessee, or directly to the repair facility if Lessee so directs Lessor in writing, within twenty-one (21) days after presentation of an invoice together with supporting evidence reasonably acceptable to Lessor, such as third party bills and work package certified completed, such amounts as are equal to the cost incurred by Lessee and reimbursable to Lessee to the extent permitted hereunder, during the Term of the Lease and claimed by Lessee (together with supporting evidence of the purpose and amount of the expenditure satisfactory to Lessor), in respect of a Major Maintenance Program, including without limitation a Major Maintenance Program undertaken to comply with the requirements set forth in Section 16 and in Exhibit F hereof provided, however, that: